Author Topic: How to reset Over Current Errors?  (Read 5121 times)

bpaddock

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How to reset Over Current Errors?
« on: May 21, 2019, 09:35:07 am »

I use a DELL PC for USB development.  I've accumulated four ports that have disabled themselves with "Device caused over-current" and shutdown the ports.
Is there a way to reset these ports?

Googling tells me to do things like reinstall Windows and pull cables, none of which are relevant or will not happen (not reinstalling Windows because of this).
Powering down the unit (physically unplug the power cable from the back) does not reset these ports.

One of the reports as reported via USBTreeView:
https://www.uwe-sieber.de/usbtreeview_e.html

============

Connection Status        : 0x04 (Device caused over-current)
Port Chain               : 2-9
Properties               : 0x01
 IsUserConnectable       : yes
 PortIsDebugCapable      : no
 PortHasMultiCompanions  : no
 PortConnectorIsTypeC    : no
ConnectionIndex          : 9
CompanionIndex           : 0
 CompanionHubSymLnk      : USB#ROOT_HUB30#4&28aeab80&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8}
 CompanionPortNumber     : 19


Jan Axelson

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Re: How to reset Over Current Errors?
« Reply #1 on: May 21, 2019, 11:56:59 am »
It's possible the port hardware was damaged by the overcurrent.

Some ideas here (task manager, devcon) if you haven't tried these:

https://superuser.com/questions/84753/how-to-restart-repair-an-usb-port